There is some in the autism world that say see it is the vaccines despite no evidence to that. some say it is disintegrative disorder. please go to www.cdc.gov see the autism page. researchers now know at least that if two parents have one child with autismt he odds are against them for having more. i know families that have 4 and 5 kids with autism.

i have two children the first one was ok the second one a girl was born with autism. you her shots were behind but she did not open her hands as much and noise bothered here early on and was so colicky.

if your older child has it best to this one tested and into therapy soon. ei does work. my daughter began at around 20 months. therapy that is. I am sorry but it is growing worldwise and the govt is doing a natl health research program as to find out why.